Automatic foodstuff waste processing system

ABSTRACT

An automatic foodstuff waste processing system comprises a conveying apparatus for removing salt and bad odors by the supply of washing water and facilitating the withdrawal of vinyl, etc. during the conveying of foodstuff wastes, a crushing apparatus for effectively crushing the foodstuff waste twice, while separating and removing the metal material, a drying apparatus for drying the foodstuff waste and removing the bad odors during the drying, a cutting apparatus for cutting the dried foodstuff waste into chips to be collected for feeds and collecting the sludge, separately, and washing water removing apparatus for enabling the automatic washing of the inner portion of the system, thereby performing a series of the foodstuff waste processes to manufacture feed chips as its by-products and enabling the processing of a larger amount of foodstuffs according to its size without the environmental pollution or contamination.

BACKGROUND OF THE INVENTION

[0001] The present invention is related to an apparatus for enabling the manufacturing of feeds or organic fertilizers from foodstuff waste, particularly, to an automatic foodstuff waste processing system for performing a series of processes, including conveying, crushing or smashing, drying and cutting of foodstuff waste and removing alien substances and bad odors of the foodstuff waste as well as washing the system, automatically, and enabling by-products obtained there from to be manufactured as feeds or organic fertilizers.

PRIOR ART

[0002] A foodstuff waste processing system is generally classified into a microorganism processing method for ripening or fermenting foodstuff wastes through cultivation of bacteria and a physical processing method for crushing or smashing and drying foodstuff waste, mechanically.

[0003] The microorganism processing method has disadvantages in that microorganisms must be cultivated, separately, and after throwing them into the foodstuff wastes their growth environment is prepared. Further, it takes a relative longer time for the fermentation of the foodstuff waste. Particularly, the microorganism processing method has the limitation to a processing amount of the foodstuff waste, because it is not possible to process a larger amount of foodstuff waste depending upon an amount of microorganisms.

[0004] On the other hand, the physical processing method has been devoted to the technical development of crushing, compressing and drying foodstuffs wastes, so some degree of the foodstuff waste processing was accomplished, but most of the conventional physical apparatuses failed to process foodstuff wastes, effectively.

[0005] A conventional physical processing apparatus has several problems due to its own properties as follows:

[0006] 1. The lack of countermeasures against the process of various foodstuff wastes.

[0007] Nevertheless physical processing apparatuses should process foodstuff wastes of hard materials such as bones and tough fibroid materials such as vegetables; their processing ability was substantially inclined to ignore various technical problems in the processing of the foodstuff waste. Furthermore, if the foodstuff waste such as wet boiled rice leftover is thrown into a crusher or a masher, it causes the physical processing apparatus to malfunction due to the high viscosity of the wet boiled rice leftover. And also, it is difficult to sort out various substances contained in the foodstuff waste during in the crushing process.

[0008] 2. The lack of taking into consideration the possibilities that metals such as spoons, chopsticks, etc. and non-metal materials such as vinyl polymers and plastics, etc., may be included in the foodstuff wastes.

[0009] Therefore, it is obvious in the conventional physical processing apparatus that the introduction of foreign substances contained in the foodstuff waste into a system without previous-checking causes the system to breakdown or damage to the system.

[0010] 3. The lack of taking into consideration the removal technology of bad odors generated during the processing of foodstuff wastes.

[0011] Nevertheless most of the foodstuff wastes composed of organic matters usually have their inherent bad odors and give out the bad odor according to the time elapsed or while being crushed or smashed, the prior art failed to remove the bad odor of the foodstuff waste.

[0012] 4. Failure of disclosing the clean maintenance after the physical processing apparatus of the foodstuff waste is used or while in use

[0013] As the physical processing apparatus of the foodstuff waste is likely to be considered as an unsanitary one, it is only a way to clean the inner portion of the physical processing apparatus along with its parts disassembled for keeping its good sanitary state. For example, Korean Patent Publication No. 97-5419 (Korean Patent No. 172,570) discloses a foodstuff waste processing apparatus, in which the foodstuff waste is crushed into an uniform size passing through the first and second crushing stages, materials of a higher specific gravity are deposited on the bottom of a storage container, and then the crushed foodstuff waste is dehydrated through the first and second stages and compressed at the same time. At that time, a final generated wastewater and sludge are stored in a separate storage container.

[0014] This patent discloses steps of crushing, compressing and dehydrating, but fails to disclose the technologies of processing, drying and deodorizing various foodstuff wastes and cleaning the system. Particularly, the patent fails to provide a method for removing the foreign substances such as metals and woods. Additionally, an automatic foodstuff waste processing apparatus is disclosed in Korean Patent Laid-Open Publication No. 98-33544(1998. 7. 25.), which comprises steps of throwing-in, crushing, compressing and dehydrating foodstuff waste and discharging by-products of the foodstuff waste. The technical contents are as follows: As shown in FIG. 7, foodstuff wastes are thrown into a hopper 1. A crusher 8 is positioned below the hopper 1 to crush the foodstuff waste passing through a return cover 69 along with a rotary cutters 65 and a space ring 67 assembled there into. Thereafter, the crushed foodstuff waste is dropped down into a compressor 48. The compressor 48 is provided with a shaft 39, on which a conveyer screw 70 is integrally mounted to convey the foodstuff waste. A return cover 69 is mounted on the crusher 8 to permit a predetermined size of the foodstuff waste to be passed there through and to be introduced into the crusher 8.

[0015] On the other hand, the foodstuff waste not passing through the return cover 69 is re-circulated in the crusher 8 for crushing, or if the foodstuff wastes such as meaty materials and fibroid materials are piled up on the return cover 69, they are again crushed or forcibly drawn out of the crusher 8 with the water supply. The compressor 48 is provided with a dehydrating regulator (not shown) mounted on the discharging outlet 52 to control its inner pressure. Whereby, the foodstuff waste is dehydrated and then discharged through the discharging outlet 52, and the water waste is discharged through a drain 83 into a sewer system. Also, the compressor 48 is provided with a cleaning device.

[0016] Further, the automatic foodstuff waste processing apparatus comprises an overload detecting device 99 to perform the fail-safe function of a system, when foreign substances such as metal spoons, metal forks, etc. cause an impediment against the operation of the crusher 8 and/or the compressor 48. In that case, a reverse-rotation button of a motor 45 provided in a control panel 28 is pushed to remove the foreign substances from the crusher 8 and the compressor 48. After the processing of the foodstuff waste, a cleaning device 27 is controlled to open a valve 26 and operate a plurality of spray nozzles related thereto, so that water jetting is performed to clean the inner portions of the hopper 1, the crusher 8 and the compressor 48. A valve 25 is operated to allow washing water to be poured into the system, so that the cleaning and the removal of bad odors can be somewhat accomplished.

[0017] But, the automatic foodstuff waste processing apparatus permits the foreign substances of metal materials jammed in the system to be removed only depending on the manual function. The crushing of the foodstuff waste and/or the removal of the bad odors requires water; so the used water is subject to be sewage-disposed and more environmental pollution occurs.

[0018] Furthermore, as the automatic foodstuff waste processing apparatus centers especially on the crushing and dehydrating of the foodstuff waste, it is inevitable that the processed foodstuff waste contains water to some degree. This means that the processed foodstuff waste must be ultimately re-processed through additional drying, fermentation or freezing for its storage. As a result, it cannot be considered that the automatic foodstuff waste apparatus processes the foodstuff waste, efficiently.

[0019] Therefore, it is very preferable if the foodstuff waste is efficiently and automatically processed in a one-stop routine without additional processes, which immediately enables the manufacturing of feeds by using the processed foodstuff waste.

[0020] An object of the present invention is to provide an automatic foodstuff waste processing system for efficiently and automatically processing foodstuff waste in a series of processes therein, and for enabling the manufacturing of feeds by using the processed foodstuff waste.

[0021] Another object of the present invention is to provide an automatic foodstuff waste processing system for efficiently and automatically processing foodstuff wastes in a series of processes, including steps of conveying, crushing or smashing, drying and cutting and removing foreign substances there from as well as washing the system and enabling the manufacturing of feeds or organic fertilizers, using the by-products of the processed foodstuff wastes.

[0022] Another object of the present invention is to provide an automatic foodstuff waste processing system for sorting out and removing metal materials such as spoons, chopsticks, etc., and non-metal materials such as vinyl polymers and plastics in the middle of the processing of the foodstuff waste.

[0023] Still, another object of the present invention is to provide an automatic foodstuff waste processing system for removing sludge and bad odors during the middle of the processing of foodstuff waste through a series of processes and washing the system to maintain a sanitary state when stopped.

SUMMARY OF THE INVENTION

[0024] Accordingly, an automatic foodstuff waste automatic processing apparatus comprises a conveying apparatus connected to a hopper and including a plurality of shower units properly coupled with the upper and lower portions of the hopper, a pair of conveyer screws for conveying foodstuff waste introduced into the hopper, a salt sensor and a water level sensor mounted on a predetermined position of the lower portion of a housing and a discharger mounted at the lowest bottom portion of the housing to discharge water according to the water level and the salt concentration of the foodstuff waste, automatically; a crushing apparatus including a crusher vertically mounted in the housing to crush the foodstuff waste which is fallen out of the upper portion of the conveying apparatus two times, at least one remover arranged in order in the housing to remove residues jammed among the gears of the crushing roller, which are provided on each remover, and including a separator applied to a power source for detecting/picking out metal materials, a sensor mounted at the upper portion of the housing for determining the amount of the foodstuff waste and at least one pair of shower nozzles arranged away from each other at a predetermined height of the housing; a drying apparatus including a housing, around the circumference of which a cylinder is mounted to have a heater with an insulating material being provided on its outer circumferential surface and a pair of conveyer screws for rotating in a direction appositive to each other to convey the foodstuff waste crushed or pulverized into a predetermined size from the crushing apparatus and to remove moisture contained therein, in which a pitch of the conveyer screw is relatively wider adjacent to an inlet portion and gradually narrowed toward an outlet portion, and a center shaft of the conveyer screw includes a heater rod inserted there into; a cutting apparatus mounted adjacent to the drying apparatus and including at least one cutting blade for rotating at a higher speed than that of the conveyer screw and cutting or chopping dried foodstuff waste into little chips to enable the chips to be used in the feed manufacture; a first chip conveying apparatus connected to the drying apparatus for collecting the chips fully dried, conveying them to a second chip conveying apparatus and being reverse-rotated to prevent the introduction of sludge there into upon the washing working; a washing water removing apparatus including an upper housing, one end portion of which is communicated with the housing of the drying apparatus, the approximate 6 middle portion of which is communicated with the lower portion of the housing provided with the crusher and the separator and the other end portion of which is connected to a drain pipe, and a pair of conveyer screws, a lower housing having one end portion communicated with the lower portion of the upper housing, on the inner circumference of which an evaporator is mounted and on the other end portion of which a conveyer is mounted and a pair of conveyer screws including; the second chip conveying apparatus mounted adjacent to the outlet portion of the first chip conveying apparatus to facilitate the collection of the chips; and a sludge conveying apparatus mounted adjacent to the housing of the washing water removal apparatus to facilitate the collection of the sludge.

[0025] Therefore, the present invention automatically processes foodstuff wastes in a manner to remove salt, dry the foodstuff wastes and remove bad odors, cut the foodstuff wastes into little chips to enable the manufacturing of feeds and separate the sludge from the chips for their collection. For it, it is noted that the present invention is affiliated with the natural environment by drying most all of the moisture generated in the system and enables the automatic cleaning of the system.

BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention now will be described in detail with reference to the accompanying drawings, in which:

[0027]FIG. 1 is a side sectional view showing an automatic foodstuff wastes processing system according to the present the invention;

[0028]FIG. 2 is a top sectional view showing an automatic foodstuff wastes processing system according to the present the invention;

[0029]FIG. 3 is a side sectional view showing a crushing apparatus viewed/cut from one side of an automatic foodstuff wastes processing system of FIG. 1, according to the present the invention;

[0030]FIG. 4 is a side sectional view showing a cutting apparatus and the connecting relationship with its peripheral parts viewed/cut from one side of an automatic foodstuff wastes processing system of FIG. 1, according to the present the invention;

[0031]FIG. 5 is a side sectional view showing a cutting apparatus and the connecting relationship with a convey screw for chips viewed/cut from one side of an automatic foodstuff waste processing system of FIG. 1, according to the present the invention;

[0032]FIG. 6 is a side sectional view showing a cutting apparatus and the connecting relationship with its peripheral parts viewed/cut from one side of an automatic foodstuff waste processing system of FIG. 1, according to the present the invention; and

[0033]FIG. 7 is a sectional view showing a foodstuff waste processing apparatus of a prior art.

DETAILED DESCRIPTION OF THE INVENTION

[0034] The present invention comprises an automatic foodstuffs waste processing apparatus 100 formed as a single unit and mounted in a housing 10. As shown in FIG. 1 and FIG. 2, the unit integrally assembled in a housing 10 automatically performs a series of processes comprising the conveying, crushing, drying, shearing or cutting, its washing, removing of bad odors and manufacturing of chips that are by-products for feeds.

[0035] A conveying apparatus 20 includes a cylindrical body 21 slantly mounted in a housing 10, in which a pair of conveyer screws 22 and 23 are arranged in the body 21. One of conveyer screws 22 and 23, for example the conveyer screw 22 is connected through a propeller 26 to the power shaft of a gear box 25 including a motor 24 and a plurality of gears which are positioned on the upper portion of the body 21. The other conveyer screw 23 is shafted to a decelerator 27 including a plurality of gears mounted on the lower portion of the body 21 thereby to receive a power from the conveyer screw 22. The conveyer screws 22 and 23 are engaged with each other, each of which is formed as a left handed screw and a right handed screw to smoothly convey the foodstuff waste, as shown in FIG. 2.

[0036] The body 21 includes an inlet portion 28 having a predetermined width to a height from its lower portion adjacent to the decelerator 27 to properly mount a hopper 11 thereon, so that the foodstuff waste is introduced there into, and an outlet portion 29 fonned adjacent to the propeller 26 to discharge the foodstuff waste.

[0037] The hopper 11 is fixed at the upper end portion to the upper portion of the housing 10 and includes at least two shower nozzles 12 properly mounted on a cover 13. The shower nozzle 12 supplies water to the foodstuff waste introduced thereby to remove its salt and bad odors, partly, at a first stage, to deposit pieces of broken glass and chinaware having a greater specific gravity on the lower bottom of the housing 11 and to float pieces of woods having a lower specific gravity, thereby enabling them to be removed through a door 30 adjacent to the inlet portion 28.

[0038] Also, the body 21 includes shower units 31 and 32 provided with pipes connected to a water service and shower nozzles for jetting water there into, which are mounted on the outer upper portion of the body 2. Similarly, another shower unit 33 includes pipes connected to a water service and shower nozzles for jetting water into the body 21, which is mounted on the outer lower portion of the body 21. An enlarging portion 34 is formed as a groove having a predetermined width or extended downward along the diametric line adjacent to the inlet portion 29 on the inner lower portion of the body 21. A draining plate 36 is mounted on the enlarging portion 34 and includes a plurality of holes to supply a larger amount of water into the body 21 by the shower nozzles. Water level sensors 37 and 38 are fixed to a position adjacent to the shower unit 33 in order to detect a water level. Any one of the water level sensors 37 and 38 is substituted with a salt concentration sensor, for example 37 to supply water at over a predetermined salt concentration and remove the salt of chips that are a final by-product by the present invention.

[0039] Additionally, metal removing plate 39 of a suspension-type is fixed at around the center of paired conveyer screws 22 and 23 in a curtain configuration to limit an amount of the foodstuffs waste to be conveyed and to block further advancement of larger sized foreign substances such as metals or woods, thereby forcing them to be removed. A discharger 40 is mounted adjacent to the decelerator 27 on the lower portion of the body 21, in which it includes a drain pipe 41 connected between a drain hole formed on the lower bottom of the body 21 and an inlet port of a sludge removing apparatus as described below in detail. An electronic valve 42 is mounted on the middle portion of the drainpipe 41 to control the water level in the body 21. A sensor 43 is mounted adjacent to the outlet portion 29 to detect a processing amount of the foodstuff waste, thereby preventing the passing of an excessive amount of the foodstuff waste there through. It means that the conveyer screws 22 and 23 are controlled by the detecting signal of the foodstuff waste processing amount sensor 43.

[0040] A crushing apparatus 50 crushes the foodstuff waste twice and separates metal materials such as spoons and chopsticks from the foodstuff waste to remove and collect them, separately. The crushing apparatus 50 comprises a power generating motor 51, a power transmitter 52 including paired connecting shafts 53 and 54 mounted in an up and down arrangement, on the circumference of which gears are formed to be engaged with each other, a crusher mounted on shafts extended from the connecting shaft 53 to crush the foodstuff waste and a separator 56 mounted on shafts extended from the connecting shaft 54 to crush the foodstuff waste as well as to remove foreign substances such as metal. The crusher 55 and the separator 56 are mounted in a housing 57, each of the paired gear groups of which are arranged to face against each other with a predetermined width and shape. The housing 57 is formed so that the lower space for mounting the sorter 56 is wider than the upper space for mounting the crusher 55.

[0041] As shown in FIG. 3, the crusher 55 includes a pair of first crushing rollers 61 and 61 a fixed to pair connecting shafts 53. The first crushing rollers 61 and 61 a are the same configuration as those of the first crushing rollers disclosed in the specification of Korean Patent Application No. 98-19099 filed by the same applicant. The first crushing rollers 61 and 61 a crush a larger bone into a predetermined smaller size and further tear or cut stems and leafs such as vegetables and even tough materials such as vinyl polymers like scissors. Namely, the first crushing rollers 61 and 61 a includes gear groups formed around their circumferences that are spaced away at predetermined intervals from each another, in which each gear group includes two kinds of teeth. Teeth 63 and 63 a on each gear forms a wider tooth space there between, on one side of which shoulders 63 and 63 a are formed in a step to stagger against each other to function as scissors. Second teeth 65 and 65 a are respectively arranged between teeth 63 and 63 a to stagger against the shoulders 64 and 64 a so as to cooperate with the teeth 63 and 63 a and cut the foodstuff waste into a predetermined size. But, if the paired crushing rollers 61 and 61 a are used, it leaves residue between the first teeth 63 and the second teeth 65 a or between the first teeth 63 a and the second teeth 65 during the crushing of the foodstuff waste, for which the system performance deterioration occurs.

[0042] Therefore, according to the present invention, the crusher 55 includes first removers 66 and 66 a each mounted adjacent to the housing 57 to remove the residue jammed between the crushing rollers. The first removers 66 and 66 a each includes blades 68 and 68 a provided at positions not to disturb the operation of the first and second teeth 63, 63 a, 65 and 65 a, in which the blades 68 and 68 a are inserted into the teeth spaces transversely arranged among the first teeth 63, 63 a and the second teeth 65, 65 a from the circumferential semi diameter position of the lower portion to a predetermined position adjacent to the upper portion to be slid ably contacted with the first crushing rollers 61 and 61 a.

[0043] A separator 56 is mounted on a wider space of the housing 57 below the first crusher 55, on both sides of which withdrawal passages 58 and 59 are formed to collect metal materials such as spoons, chopsticks, etc. The separator 56 includes a pair of second crushing rollers 71 and 71 a fixed to paired connecting shafts 54 and a plurality of circular plates 72 and 72 a separately integrated with the crushing rollers 71 and 71 a and spaced away at a predetermined interval from one another, in which each of the circular plates 72 and 72 a includes first and second teeth 73 and 73 a of a spear gear in the form of a ladder. Therefore, the first crushing rollers 71 and 71 a are positioned closely below the first crushing rollers 61 and 61 a, so that the foodstuff waste first crushed is introduced between the first and second teeth 73 and 73 a, thereby cutting tough materials like scissors and pressing hard materials such as bones and breaking them into smaller pieces. But, if only the paired crushing rollers 71 and 71 a are used, it leaves residue between the first second teeth 73 and 73 a during crushing the foodstuff waste, for which the system performance deteriorates.

[0044] According to the present invention, the separator 56 includes paired crushing rollers 71 and 71 a facing to each other and second removers 75 and 75 a each mounted between a guide hole 81 and the crusher 65 to form a guide passage 74 for guiding the foodstuff waste to be dried and a withdrawal passage 58 and 59 for withdrawing metals cooperating with the wall of the housing 57. The second removers 75 and 75 a respectively include blades 76 and 76 a similar to the blades 68 and 68 a which are positioned into the teeth spaces transversely arranged among a plurality of circular plates 72 and 72 a which are slid ably contacted with the circumferential semi diameter portion of the lower portion and extended outward at an approximate 45° there from. And, the second crushing rollers 76 and 76 a are each applied to a different electrode of a direct current power source. For it, if a metal piece is caught between the circular plates 73 and 73 a, the connecting shafts 54 are simultaneously reverse-rotated to pick out and throw the metal piece into any one of the withdrawal passages 58 and 59, thereby collecting it at a receiving box 77.

[0045] Additionally, shower nozzles 67 and 67 a are mounted immediately below the first remover 62 and 62 a to clean the inner portion of the housing 57. Shower nozzles 67 and 67 a are mounted immediately below the second removers 75 and 75 a to wash a drying apparatus 80 together with nozzle pipes as described below (referring to FIG. 1). A water guiding hole 78 is formed on the lower bottom of the housing 57 to introduce washing water supplied from the shower nozzles to clean the inner portion of the housing 57 or dropping water generated due to excessive moisture contained in the foodstuff waste into a washing water removing apparatus or drying apparatus 80. A sensor 79 is mounted over the guide hole 81 and for detecting and controlling an amount of the foodstuff waste to be supplied into the guide hole 81 (referring to FIG. 1). It means that a signal of the foodstuff waste processing amount sensor 79 is received into a system control (not shown) to control the operation of the conveying screws 22 and 23.

[0046] Referring to FIG. 1, again, the drying apparatus 80 comprises a housing 82 laterally extended with respect to the housing 57 and a cylindrical chamber 83 surrounded around the inner circumference of the housing 82, in which a heater 84 electrically connected to an external power source is mounted or the cylindrical chamber 83 may be used as a combustion chamber of gas in order to be maintained at a predetermined temperature in the housing 82. A pair of drying conveyer screws 85 and 85 a is horizontally mounted in the housing 82. Heater rods 86 each are respectively inserted into the conveyer screws 85 and 85 a at the same length as that thereof to heat the conveyer screws 85 and 85 a and dry the foodstuff waste in the housing 82 with the heating of the cylinder chamber 83. A decelerator 87 including a gear box and a motor 88 are mounted in order on the external one side surface of the housing 82 to rotate the conveyer screws 85 and 85 a at a predetermined speed. Therefore, if most of the wood or vinyl polymers are contained in little pieces in the foodstuff waste, they can be removed in the process of the drying and conveying of the foodstuff waste. Also, the conveyer screws 85 and 85 a are configured to have a relative wider pitch adjacent to the water guiding hole 78, a pitch to get narrower till a predetermined length range and then a narrowed uniform pitch on the remainder portion thereof. It means that the conveyer screws 85 and 85 a compress and/or dry the foodstuff waste by their pitch structures. The dried foodstuff waste is cut into chips of a predetermined size so as to enable the chips to be used for feeds.

[0047] As shown in FIGS. 4, 5 and 6, a cutting apparatus 90 comprises a housing 91 coupled to the housing 82 with being heat-insulated by means of an insulating plate 89, into which the shafts of the conveyer screws 85 and 85 a are extended. Cutting blades 92 and 92 a are mounted on the shafts adjacent to the conveyer screws 85 and 85 a, respectively, to be rotated by gear rotating plates 93 and 93 a and cut the foodstuff waste into chips. In other words, the gear rotating plates 93 and 93 a are linked with several gears so as to be rotated at a higher speed than that of the conveyer screws 85 and 85 a in a direction appositive to each other. A first gear 94 is shafted to the end of the shaft extended the farthest away from the conveyer screws 85 and 85 a. The first gear 94 is engaged with a second gear 95 on the upper portion thereof. The second gear 95 includes an idler 96 mounted on the same shaft adjacent thereto to be rotated by a bearing 96 a. The idler 96 is idly rotated in contact with the rotating plate 97 of the conveyer screws 85 and 85 a. An impeller 98 is mounted on the same shaft next to the back surface of the idler 96 to rotate a second rotating gear 98. In this way, as the gear rotating plates 93 and 93 a rotate, the cutting blades 92 and 92 a are rotated in a direction appositive to each other.

[0048] On the other hand, temperature sensors 102 such as thermostats, thermocouples, etc. are mounted on the end portion of the convey screws 85 and 85 a to detect the temperature of a brush 101 and the heater rods 86 so as to control the temperature of the heater rods 86 by means of a system control, in which the brush 101 is an electrical power terminal to apply the power source to the heater rod 86. An inlet hole 103 is formed immediately below the cutting blades 92 and 92 a to permit the chips out of the cutting blades 92 and 92 a to be passed there through.

[0049] A chip conveying apparatus 104 includes a housing 105 mounted right below the inlet hole 103, in which a conveyer screw 106 is mounted. The conveyer screw 106 conveys the chips leftward in the drawings with being shafted to a motor 107 so as to supply them to a second conveying apparatus 110. On the contrary, upon the washing operation of the system, the conveyer screw 106 is reverse-rotated to prevent the introduction of water passed through the drying apparatus 80 into the second chip conveying apparatus 110.

[0050] As shown in FIGS. 1, 5 and 6, the second chip conveying apparatus 110 comprises a housing 114 vertically arranged, on the top portion of which a decelerator 112 is mounted along with a power motor 111. A conveyer screw 113 is mounted in the housing 114. The housing 114 is communicated at the lower portion with the housing 105 of the first conveyer 104 and includes a chip discharging port formed adjacent to the upper portion, to which a guide portion 115 is connected to enable the chips to be collected into a burlap bag. A water passage 108 is connected at one end portion to the left lower portion of the housing 105 to pass through washing water and at the other end portion to the washing water removing apparatus 120 as shown in FIG. 1.

[0051] The washing water removing apparatus 120 comprises an upper housing 121 and a lower housing 122 doubly arranged to each other, in which the housing 121 includes a washing water inlet port 123 formed on the left end portion, a hole communicated with the water guiding hole 78 at the middle portion and a communicating port 124 formed on the right lower portion. And also, the water drainpipe 41 connected to the electronic valve 42 is fixed to the right upper portion of the housing 121 as described above.

[0052] Conveyer screws 125 and 126 are respectively mounted in the housings 121 and 122, in which a heater rod is provided. Further, an evaporator 127 is mounted adjacent to the inner surface of the housing 122, which may be a combustion apparatus using gas or fossil fuel. The conveyer screws 125 and 126 are coupled to a decelerator 129 to be rotated at the same speed. A motor 128, terminals for applying the power source to the heater rods and a temperature sensor are properly mounted on the left end portion of the conveyer screw 126 to enable the system control for evaporating washing water.

[0053] Furthermore, the washing water removing apparatus 120 enables sludge generated during the washing of the whole system or the processing of the foodstuff waste to be conveyed by means of the conveyer screws 125 and 126, thereby disposing the sludge, separately.

[0054] In other words, as shown in FIG. 5, the sludge conveyed toward the left portion of the housing is moved to a sludge conveying apparatus 130 vertically arranged. The sludge conveying apparatus 130 comprises a housing 131, the lower portion of which is communicated with the housing 126. A vertical conveyer screw 132 is mounted in the housing 131, on the upper portion of which a decelerator 133 and a power motor 134 are mounted. A discharging passage (not shown) is fixed adjacent to the decelerator 133 to enable the collection of the sludge into a burlap bag. Of course, the sludge can be discharged through a discharging port formed on the right lower portion of the housing 126. Herein, it is noted that the vertical arrangement of the chip conveying apparatus 120 and the sludge conveying apparatus 130 are aimed at enhancing the space efficiency of the system.

[0055] As described above, the automatic foodstuff waste processing system 100 is operated as follows: the foodstuff waste is placed into the hopper 11 together with water supplied from the shower nozzle 12 and conveyed upward in the body 21 by the conveyer screws 21. At that time, an amount of water to be supplied is determined according to the water level and the salt concentration separately detected by the water level sensor 37 and the salt sensor 38. At the same time, the operation of the electronic valve 42 is controlled by a system control to determine the opening of the drain pipe 41, thereby discharging water containing the salt concentration of over a predetermined value.

[0056] Thereafter, the foodstuff waste is conveyed to the upper portion of the housing 21 by the conveyer screws 22 and 23 and effectively moved into the crushing apparatus 50 by the propeller 26. A predetermined amount of the foodstuff waste determined by the foodstuff waste processing amount sensor 43 is passed through the crusher 55 and the separator 56 in turn to be crushed twice and have metal materials to be removed at the separator 56 and to be collected into the receiving box 77. At that time, moisture and water contained in the foodstuff waste is flowed through the water-guiding hole 78 into the housing 121. In that case, the foodstuff waste processing amount sensor 79 detects an amount of the foodstuff waste supplied to the drying apparatus 80 to control the operation of the conveying apparatus 20 and the drying apparatus 80.

[0057] The drying apparatus 80 presses the foodstuff waste to remove its contained moisture by the configuration of the conveyer screws 85 and 85 a and dry it by the heater 84 and the heater rod 86, so that the foodstuff waste is conveyed to the cutting apparatus 90. The cutting blades 92 and 92 a of the cutting apparatus 90 cuts the foodstuff waste into chips of a size that is determined by a clearance formed between the blade and the discharging outlet of the drying apparatus 80. The chips are supplied to the first conveyer 104 and then to the second chip conveying apparatus 110 to be collected in a burlap bag.

[0058] In the process of a series of chip manufacturing, not only water and small amounts of sludge contained in the water passing through the water guiding hole 78 of the housing 57, but also water containing rich salt and little sludge passing through the discharging pipe 41 are dried at the same time, and the moisture of the sludge is removed and then moved by the conveyer screws 125 and 126 to the sludge conveying apparatus 130 to be collected into a burlap bag.

[0059] On the other hand, upon the washing of the automatic foodstuff waste processing system 100, the shower units 31, 32 and 33 mounted on the inner upper and lower portions of the housing 21 are operated, while the shower nozzles 12 and 13 are opened to clean not only the hopper 11 but also the conveyer screws 22 and 23. At that time, the residue of the foodstuff waste left in the housing 21 is introduced into the housing 57 by the conveyer screws 22 and 23, and the drain pipe 41 is opened according to the water level detected of the sensor 38 to flow the washing water into the washing water removing apparatus 120 to be evaporated by the heater rod and the evaporator 127. The residual foodstuff waste is crushed twice passing through the crusher 56 and the separator 57 and then guided into the drying apparatus 80. At the same time, the washing water from paired shower nozzles 62, 62 a and 67, 67 a washes the inner portion of the housing 57 and then is flowed into the washing water removing apparatus 120 through the water guiding hole 78 of the housing 57. In that case, the washing water is not only evaporated or dried at a predetermined temperature by the heater rod and the evaporator 127, but also the sludge is dried and then conveyed into the sludge conveying apparatus 130 for collection.

[0060] Furthermore, a part of the washing water is flowed into the drying apparatus and dried. At that time, the conveyer screws 105 and 105 a of the chip conveying apparatus 104 are reverse-rotated to supply the residual foodstuff waste to the upper and lower housings 121 and 122 along with the washing water in order, sot that the washing water is fully evaporated, and the sludge is dried and then conveyed to the sludge conveying apparatus 130 for the collection. Like this, after the sludge is removed, the automatic foodstuff waste processing system can be washed by only the operation of the shower units and the nozzles.

[0061] As described above, the present invention removes salt and bad odors by the supply of washing water, effectively crushes foodstuff waste twice, separates and removes the metal material, facilitates the withdrawal of vinyl, etc., dries the foodstuff waste, removes bad odors during the drying, cuts the dried foodstuff waste into chips to be collected for feeds and collects the sludge, separately. More preferably, the present invention can automatically wash the inner portion of a system. Therefore, the present invention can perform a series of a foodstuff waste processes to manufacture the feed chips as its by-products and enable the process of a larger amount of the foodstuffs according to its size without causing environmental pollution or contamination. 

What is claimed is:
 1. An automatic foodstuff wastes processing system comprising; a conveying apparatus connected to a hopper and including a plurality of shower units properly coupled with the upper and lower portions of the hopper, a pair of conveyer screws for conveying foodstuff waste introduced into the hopper, a salt sensor and a water level sensor mounted on a predetermined position of the lower portion of housing and a discharger mounted at the lowest bottom of the housing to discharge water according to the water level and the salt concentration of the foodstuff waste, automatically; a crushing apparatus including a crusher vertically mounted in the housing to crush the foodstuff waste fallen out of the upper portion of the conveying apparatus two times, at least one remover arranged in order in the housing to remove residue jammed among the gears of a crushing roller, which are provided on each remover, and including a separator applied to a power source for detecting/picking out metal materials, a sensor mounted at the upper portion of the housing for determining the amount of the foodstuff waste and at least one pair of shower nozzles arranged away from each other at a predetermined height on the housing; a drying apparatus including a housing, around the circumference of which a cylinder is mounted to have a heater with an insulating material being provided on its outer circumferential surface and a pair of conveyer screws for rotating in a direction appositive to each other to convey the foodstuff waste crushed or pulverized into a predetermined size from the crushing apparatus and to remove moisture contained therein, in which the pitch of the conveyer screw is relatively wider adjacent to an inlet portion and gradually narrowed toward an outlet portion, and the center shaft of the conveyer screw includes a heater rod inserted there into; a cutting apparatus mounted adjacent to the drying apparatus and including at least one cutting blade for rotating at a higher speed than that of the conveyer screw and cutting or chopping dried foodstuff waste into little chips to enable the chips to be used in the manufacture of feed; a first chip conveying apparatus connected to the drying apparatus for collecting the chips fully dried, conveying them to a second chip conveying apparatus and being reverse-rotated to prevent the introduction of sludge there into upon the washing working; a washing water removing apparatus including an upper housing, one end portion of which is communicated with the housing of the drying apparatus, the approximate middle portion of which is communicated with the lower portion of the housing provided with the crusher and the separator and the other end portion of which is connected to a drain pipe, and a pair of conveyer screws, a lower housing having one end portion communicated with the lower portion of the upper housing, on the inner circumference of which an evaporator is mounted and on the other end portion of which a conveyer is mounted and a pair of conveyer screws including; the second chip conveying apparatus mounted adjacent to the outlet portion of the first chip conveying apparatus to facilitate the collection of the chips; and, a sludge conveying apparatus mounted adjacent to the housing of the water washing removal apparatus to facilitate the collection of sludge.
 2. The automatic foodstuff waste processing system as claimed in claim 1 , in which: the crusher comprises a pair of crushing rollers provided with a plurality of gears for crushing the foodstuff waste and first removers each mounted adjacent to the housing to remove the residue jammed between the crushing rollers, in which the first removers each includes blades provided at positions not to disturb the operation of the first and second teeth, the blades are inserted into the teeth spaces transversely arranged among the first teeth and the second teeth from the circumferential semi diameter position of the lower portion to a predetermined position adjacent to the upper portion to be slid ably contacted with the first crushing rollers.
 3. The automatic foodstuff waste processing system as claimed in claim 1 , in which: the separator comprises a pair of second crushing rollers fixed to paired connecting shafts, a plurality of circular plates separately integrated with the crushing rollers and spaced away at a predetermined interval from one another and second removers each mounted between a guide hole and the crusher to form a guide passage for guiding the foodstuff waste to be dried and a withdrawal passage for withdrawing metals along with the wall of the housing, wherein a power source is applied to each of the circular plates to have a different electrical polarity, and if a metal piece is caught between the circular plates, they are reverse-rotated to pick out and throw the metal piece into any one of the withdrawal passages, thereby collecting it in a receiving box.
 4. The automatic foodstuff waste processing system as claimed in claim 1 , in which: the cutting apparatus comprises gear rotating plates including cutting blades mounted on the shafts adjacent to the conveyer screws of the drying apparatus, respectively, so as to be rotated at a higher speed than that of the conveyer screws in a direction appositive to each other, a first gear shafted to the end of the shaft extended farthest away from the conveyer screws and engaged with a second gear on the upper portion thereof, the second gear including an idler mounted on the same shaft adjacent thereto to be rotated by a bearing to be idly rotated in contact with the rotating plate of the conveyer and an impeller mounted on the same shaft next to the back surface of the idler to rotate a second rotating gear, whereby the rotation of the gear rotating plates causes the rotation of the cutting blades in a direction appositive to each other.
 5. The automatic foodstuff waste processing system as claimed in claim 1 , in which: the housing of the water washing removing apparatus includes a collecting passage connected to its lower portion instead of the sludge conveying apparatus to collect the sludge, directly.
 6. The automatic foodstuff waste processing system as claimed in claim 1 , in which: the cylinder of the drying apparatus comprises a gas combustion chamber. 